Maxwell is a Elixir HTTP client which allow developers to customize its behavior with middleware. If you’re familiar with Faraday or Plug, then you’ll love Maxwell. Rather than re-implement yet another HTTP client, Maxwell has adapters for popular libraries like httpc, ibrowse, hackney. On top of having a consistent interface between different adapters. This tutorial gives an introduction of common use cases built into Maxwell, and also explains how to extend Maxwell with custom middleware
Out of the box, Maxwell functions like Plug with a easy to use interface.
There are a number of
Maxwell.Conn functions for manipulating connection details. Check out the Maxwell.Conn documentation for a full list.
The client will decode response body to json by Maxwell.Middleware.Json.
Adapter Advanced Usage
All adapters support send_file, send_multipart, send_stream.
- send_file with chunked or without chunked.
- send multipart
- send stream
Writing own Middleware
defmodule MyMiddleware do
def init(options) do
# initialize options
def call(conn, next_fn, opts) do
Find More detail example in Maxwell.Middleware.Logger.
Maxwell VS Tesla
Maxwell and Tesla all support middleware and multiple adapters.
Maxwell’s code is clean, well tested and easy to follow, so I recommend browsing the source code to find extra options and features not covered in this tutorial.
It’s a piece of cake to use Maxwell, if you already get used to Plug’s code.
Because they have a lot of similarities.